The invention discloses an LED lamp printing and dyeing device. The device comprises a base, the base is of a hollow structure, two symmetric first supporting rods are arranged on the base, a thread rod which is horizontally arranged is arranged in the base, one end of the thread rod is rotatably connected with the inner wall of the base, the other end of the thread rod penetrates the side wall ofthe base, the thread rod is sleeved with two symmetric first sliding blocks, the first sliding blocks are in threaded connection with the thread rod, the upper side wall of each first sliding block is connected with a second supporting rod which is vertically arranged, a strip opening matched with each second supporting rod is formed in the upper side wall of the base, the second supporting rodspenetrate the strip openings, clamping blocks are connected to the positions, above the base, of the side walls of the opposite sides of the two second supporting rods, and clamping grooves are formedin the clamping blocks. The fixing effect on a lamp is good, and a printing and dyeing head is convenient to disassemble and replace.